Knoxville Weather Forecast

    • 71
    • 89

    Rain Showers Likely

    • 64
    • 83

    Rain Showers

    • 56
    • 81

    Mostly Sunny

    • 64
    • 83

    Chance Rain Showers

    • 62
    • 84

    Slight Chance Rain Showers

    • 63
    • 83

    Chance Rain Showers

Today 8 Sep Knox

Mostly sunny. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 8 Sep Knox

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Not as cool with Lows in the lower 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Knoxville Temperature Statistics

September Temperature

Galesburg Municipal Airport (7.5 miles)

  • Lowest 6 September, 2026

    68.2 °F

  • Average September

    80.5 °F

  • Highest 3 September, 2026

    93.6 °F

Climate (2021–2026)

Galesburg Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.5 °F
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